]]>Wed, 17 Oct 2018 00:30:33 GMThttp://trouetlab.arizona.edu/news/raquels-new-paper-in-nature-geoscienceOur group published a paper in Nature Geoscience yesterday, entitled: Climatic and volcanic forcing of tropical belt northern boundary over the past 800 years

Raquel Alfaro-Sanchez took the lead on this paper and had help from Tree-Ring Lab colleagues Stefan Klesse, Amy Hudson, Soumaya Belmecheri, Russ Monson, Henry Diaz, and Valerie, as well as Hanh Nguyen, Nesibe Kose, and Ricardo Villalba. Congrats, Raquel!

In this paper, we used tree rings from 5 locations across the Northern Hemisphere to develop the first reconstruction of NH Hadley Circulation variability over the last 800 years.

main findings of the paper:(1) we find a distinct contraction of the NH tropical belt following large volcanic eruptions, which has implications for potential future solar radiation management ("artificial volcano") strategies;(2) our reconstruction shows a 6-decade period of tropical expansion from 1568-1634, which resulted in drought conditions and contributed to co-occurring societal disruptions across the NH: Pueblo drought, Jamestown drought, Ottoman Crisis, Ming Dynasty collapse;(3) given the projections of tropical expansion under future climate change, our results warn for potential hemispheric-scale societal impacts.]]>Fri, 17 Aug 2018 12:48:37 GMThttp://trouetlab.arizona.edu/news/how-long-does-it-take-for-todays-violent-wildfires-to-go-outValerie was interviewed this week about the California wildfires for a piece in Mashable.

]]>Tue, 07 Aug 2018 20:57:43 GMThttp://trouetlab.arizona.edu/news/national-geographic-interviewValerie was interviewed by National Geographic about this summer's heatwaves and wildfires in Europe:

]]>Tue, 07 Aug 2018 20:47:10 GMThttp://trouetlab.arizona.edu/news/shuzo-wins-new-phytologist-poster-prize-at-iss2018Congrats to Shuzo Oita! Shuzo is a PhD student in Betsy Arnold's lab (UA Plant Sciences) who spent a few months in the Trouet Lab in 2017 to cross date tree rings in black spruce (Picea Mariana) from Quebec. He then linked his tree-ring based estimates of tree age and biomass to differing endophytic fungi communities. His poster won the coveted New Phytologist poster prize at the International Symbiosis Society (ISS) conference in Oregon. Extremely well deserved!]]>Tue, 07 Aug 2018 20:35:27 GMThttp://trouetlab.arizona.edu/news/amquacanqua-meeting-in-ottawaValerie will be presenting new work in a plenary lecture at the AMQUA/CANQUA meeting in Ottawa this week: https://www.quaternary2018.com/. She will talk about our upcoming paper: "Northern Hemisphere tropical belt movements over the last 800 years". Her talk is on Thursday Aug 9 at 8.30am in room 2200 in Richcroft Hall (Carleton University)]]>Thu, 29 Mar 2018 19:01:35 GMThttp://trouetlab.arizona.edu/news/valerie-has-been-recognized-as-a-ua-distinguished-scholar